<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        *{
            margin:0;
            padding: 0;
        }
        div{
            width: 100px;
            height: 100px;
            margin:0 auto;
            background-color: red;
            transition: transform 1s;
        }
        div:hover{
            transform:rotate(80deg);
        } 
    </style>
</head>
<body>
    <div>

    </div>
</body>
</html>